
KHTN 8 giữa kì 2
Authored by Miên Nông
Chemistry
8th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Than cháy trong bình khí oxygen nhanh hơn cháy trong không khí. Yếu tố đã làm tăng tốc độ của phản ứng này là
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Dung dịch/chất lỏng nào sau đây làm đổi màu quỳ tím thành đỏ?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch nào sau đây không làm đổi màu quỳ tím thành đỏ?
Nước ép quả khế
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Ở 25 oC và 1 bar, 1,5 mol khí chiếm thể tích bao nhiêu?
31.6 lít
35,2 lít
38,2 lít
37,2 lít
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hãy cho biết 64g khí oxi ở đktc có thể tích là
49,85 lít
49,58 lít
4,985 lít
45,98 lít
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tỉ khối hơi của khí sulfur (IV) oxide (SO2) đối với khí chlorine (Cl2) là
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Trong 200 ml dung dịch có hòa tan 8,5 gam sodium nitrate (NaNO3). Nồng độ mol của dung dịch là
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